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Proper furnace orifice replacement is mandatory to prevent soot accumulation or overheat conditions in thin-air environments
effectively stopping operation if vent blockages or flue gas backflow occur
Calibrated for 150°F cut-out
Critical component for preventing dangerous CO leaks and ensuring HVAC system safety
ensuring no-hassle field installation
Sensus 143-16-021-04 Blue Spring Proper furnace orifice replacement isThe Sensus 143 16 021 04 Blue Spring is a critical calibration component engineered specifically for Sensus 243 12 and 121 12 gas pressure regulators. Designed for high precision pressure management, this heavy duty spring provides an outlet pressure range of 5" to 8. 5" w. c. (water column), ensuring consistent delivery and stable downstream pressure in industrial and commercial natural gas applications. As a veteran grade gas regulator replacement
